Compact radio emission indicates a structured jet was produced by a binary neutron star merger
文献类型：期刊论文
| 作者 | Ghirlanda, G.1,2,3; Salafia, O. S.1,2,3; Paragi, Z.4; Giroletti, M.5; Yang, J.6,7 ; Marcote, B.4; Blanchard, J.4; Agudo, I.8; An, T.9; Bernardini, M. G.10,29
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| 刊名 | SCIENCE
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| 出版日期 | 2019-03-01 |
| 卷号 | 363期号:6430页码:968-+ |
| ISSN号 | 0036-8075 |
| DOI | 10.1126/science.aau8815 |
| 通讯作者 | Ghirlanda, G.(giancarlo.ghirlanda@brera.inaf.it) ; Salafia, O. S.(omsharan.salafia@brera.inaf.it) |
| 英文摘要 | The binary neutron star merger event GW170817 was detected through both electromagnetic radiation and gravitational waves. Its afterglow emission may have been produced by either a narrow relativistic jet or an isotropic outflow. High-spatial-resolution measurements of the source size and displacement can discriminate between these scenarios. We present very-long-baseline interferometry observations, performed 207.4 days after the merger by using a global network of 32 radio telescopes. The apparent source size is constrained to be smaller than 2.5 milli-arc seconds at the 90% confidence level. This excludes the isotropic outflow scenario, which would have produced a larger apparent size, indicating that GW170817 produced a structured relativistic jet. Our rate calculations show that at least 10% of neutron star mergers produce such a jet. |
| WOS关键词 | AFTERGLOW LIGHT CURVES ; ELECTROMAGNETIC COUNTERPART ; LUMINOSITY FUNCTION ; GRB JETS ; RAY ; GW170817 |
| WOS研究方向 | Science & Technology - Other Topics |
| 语种 | 英语 |
| 出版者 | AMER ASSOC ADVANCEMENT SCIENCE |
| WOS记录号 | WOS:000460194200043 |
| 源URL | [http://libir.pmo.ac.cn/handle/332002/23922]  |
| 专题 | 中国科学院紫金山天文台 |
| 通讯作者 | Ghirlanda, G.; Salafia, O. S. |
| 作者单位 | 1.Osserv Astron Brera, Ist Nazl Astrofis, Via E Bianchi 46, I-23807 Merate, Italy 2.Univ Milano Bicocca, Dipartimento Fis G Occhialini, Piazza Sci 3, IT-20126 Milan, Italy 3.Ist Nazl Fis Nucl, Sez Milano Bicocca, Piazza Sci 3, I-20126 Milan, Italy 4.Joint Inst Very Long Baseline Interferometry VLBI, Oude Hoogeveensedijk 4, NL-7991 PD Dwingeloo, Netherlands 5.Ist Nazl Astrofis, Ist Radioastron, Via Gobetti 101, I-40129 Bologna, Italy 6.Chalmers Univ Technol, Onsala Space Observ, S-43992 Gothenburg, Sweden 7.Chinese Acad Sci, Yunnan Observ, Kunming 650216, Yunnan, Peoples R China 8.CSIC, Inst Astrofis Andalucia, Glorieta Astron S-N, E-18008 Granada, Spain 9.Chinese Acad Sci, Shanghai Astron Observ, Key Lab Radio Astron, Shanghai 200030, Peoples R China 10.Univ Montpellier, Lab Univers & Particules Montpellier, Inst Natl Phys Nucl & Phys Particules, CNRS,IN2P3, Pl Eugene Bataillon, F-34085 Montpellier, France |
| 推荐引用方式 GB/T 7714 | Ghirlanda, G.,Salafia, O. S.,Paragi, Z.,et al. Compact radio emission indicates a structured jet was produced by a binary neutron star merger[J]. SCIENCE,2019,363(6430):968-+. |
| APA | Ghirlanda, G..,Salafia, O. S..,Paragi, Z..,Giroletti, M..,Yang, J..,...&Zhang, M..(2019).Compact radio emission indicates a structured jet was produced by a binary neutron star merger.SCIENCE,363(6430),968-+. |
| MLA | Ghirlanda, G.,et al."Compact radio emission indicates a structured jet was produced by a binary neutron star merger".SCIENCE 363.6430(2019):968-+. |
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来源：紫金山天文台
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